乘法赋值（*=）
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
乘法赋值（*=）运算符将变量乘以右操作数的值，并将结果赋值给该变量。
尝试一下
let a = 2;
console.log((a *= 3));
// Expected output: 6
console.log((a *= "hello"));
// Expected output: NaN
语法
js
x *= y // x = x * y
示例
使用乘法赋值
js
let bar = 5;
bar *= 2; // 10
bar *= "foo"; // NaN
规范
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-assignment-operators |